IP SLA not showing "packet loss"

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Nov 19th, 2008
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Hello friends

I am facing some IP SLA implementation issues. I trying to test my requirement in a LAB scenario.

My network is R1--->R2 .I am configuring UDP jutter feature of IPSLA on these routers.R1 is the source and R2 is the Responder. When i see the "show ip sla statistics" i see the packet loss always 0 ,even if i shut down the interfaces of the connected routers while doing a continuous ping . Rest of the values like jitter,RTT are showing up fine. Kindly let me know your views on this problem.


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srimural Wed, 11/19/2008 - 20:29
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A sample config is given below. Just verify the configs on ur end.


ip sla monitor

type udpEcho dest-ipaddr X.X.X.X dest-port

frequency 30

request-data-size 160

tos 128

timeout 1000

tag FLL-RO

ip sla monitor schedule 5 life forever start-time now


Please give the o/p of the following commands

show ip sla monitor configuration

show ip sla statistics

Thanks and Regards,

Srinath Muralidharan



ullasupendran Thu, 11/20/2008 - 07:21
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The current config and results are as flollows

ip sla 1

udp-jitter x.x.x.x 65051 source-ip x.x.x.x num-packets 15 interval 200

frequency 20

ip sla schedule 1 life forever start-time now

7200#sh ip sla statis

FL-OP-GRE-7200#sh ip sla statistics

IPSLAs Latest Operation Statistics

IPSLA operation id: 1

Latest RTT: 90 milliseconds

Latest operation start time: 09:58:33.760 EST Thu Nov 20 2008

Latest operation return code: OK

RTT Values:

Number Of RTT: 15 RTT Min/Avg/Max: 90/90/96 milliseconds

Latency one-way time:

Number of Latency one-way Samples: 15

Source to Destination Latency one way Min/Avg/Max: 62/62/69 milliseconds

Destination to Source Latency one way Min/Avg/Max: 27/27/29 milliseconds

Jitter Time:

Number of SD Jitter Samples: 14

Number of DS Jitter Samples: 14

Source to Destination Jitter Min/Avg/Max: 0/2/7 milliseconds

Destination to Source Jitter Min/Avg/Max: 0/1/1 milliseconds

Packet Loss Values:

Loss Source to Destination: 0 Loss Destination to Source: 0

Out Of Sequence: 0 Tail Drop: 0

Packet Late Arrival: 0 Packet Skipped: 0

Voice Score Values:

Calculated Planning Impairment Factor (ICPIF): 0

Mean Opinion Score (MOS): 0

Number of successes: 50

Number of failures: 0

Operation time to live: Forever


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